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Thread: refrigeration capacity question
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05-11-2008, 05:12 PM #1
refrigeration capacity question
I'm working with a refrigeration system which"the nominal primary refrigeration capacity is 25kW at 4K, with a secondary capacity of 55kW from 50 to 70K"
My understand is that when the system maintains an output temperature at 4K, the cooling load is 25kW. If I am correct, then why when the output temperature is much higher, at 50-70K, the cooling load increases instead of decreases?
Thanks a lot for any input!
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05-11-2008, 06:10 PM #2
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Re: refrigeration capacity question
Could you put that sentence back in contest from what is been aloof.
To me, that doesn't have much sense without more explanations.
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05-11-2008, 06:29 PM #3
Re: refrigeration capacity question
There is no much contest....The article I'm reading is a brief introduction to a cryogenic refrigerator:
"the refrigerator was designed and manufactured by Process System International, and is based upon a modified Claud cycle utilizing oil lubricated turbines. The norminal primary refrigeration capacity is 25kw at 4K, with a secondary capacity of 55kW from 50 to 70K. see Table 1 for additional parameters......"
Thanks a lot
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08-11-2008, 02:14 PM #4
Re: refrigeration capacity question
Katie,
i think the 4K they are talking about is the temperatuur difference 4 Kelvin,also the 50 & 70 k is the difference. so they are talking about a difference of input and end up temperature. so meaning they are of putting something in the freezer on say 20C°,and freeze it in the first stage whit 4C° or 4K,then go on to the second stage where the go to a 50 or 70K lower than the input themperature.
IceLast edited by icecube51; 08-11-2008 at 02:19 PM.
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